Place it at the very start of an entrance edit as the introduction itself, then follow it with an awkward moment sound effect when the other characters react, or close the scene afterwards with the end meme sound for a clean cut to black.
About this sound
This 11-second voice clip features a man proudly announcing himself as Big Billy the Big Wet, then saying he is going to go before trailing off into a long, drawn-out hum. It feels confidently absurd at first, then increasingly confusing and silly, as the deadpan delivery and unexplained claim collapse into pure nonsense.